According to previous studies that applied a popular goodness-of-fit test, the wealth of the world’s billionaires does not follow a Pareto distribution. The test applied by those studies assumes that wealth is measured without error, yet, if different sources of data on the wealthiest people...

The percentage of Americans who are obese has doubled since 1980. Most attempts to explain this "obesity epidemic" have been found inadequate, including the "Big Two" (the increased availability of inexpensive food and the decline of physical exertion). This article explores the possibility that...